Network Engineer Senior; Security – TS​/SCI

Network Engineer Senior (Security) – TS/SCI required

Transform technology into opportunity as a Network Engineer Senior (Security) at GDIT, supporting the US Army Intelligence and Security Command (INSCOM) mission.

• Install, configure, and maintain customer network infrastructure and security stack as part of a global enterprise.
• Troubleshoot networking and security protocols/technologies, including switching, routing, and security (Layer4-7, firewall, Site-to-Site VPN, DMVPN, etc.) to resolve problems on the customer information system.
• Analyze, plan, and implement access control lists (ACL), firewall policies, and other logical security controls in a multi‑vendor security stack.
• Provide expert‑level (Tier3) network security engineering support for INSCOM activities in the National Capital Area.
• Collaborate with teams of various technical disciplines to solve enterprise IT problems from a holistic perspective.
• Configure load balancing and authentication policies on F5
  
  BIG‑IP to support web application hosting.

• Excellent attention to detail and communication skills.
• Experience configuring, integrating, and troubleshooting security appliances in a multi‑vendor federal enterprise environment.
• Knowledge of routing protocols in Next Generation Firewalls.
• Experience with network automation tools, scripting languages, or infrastructure‑as‑code tools (e.g., Net Brain, Python, Power Shell, APIs, Terraform, Ansible).
• Intermediate knowledge of F5
  
  BIG‑IP deployment and configuration with Local Traffic Manager and Application Security Manager.
• Hardening network devices in accordance with STIGS/NIST and industry best practices.
• Experience with packet analysis tools such as TCPDump and Wireshark.
• Working in a large SDLC environment.

• Bachelor’s Degree with 12 years of experience.
• Master’s Degree with 10 years of experience.

• DoD
  8570/8140 compliance (required).
• Computer Environment (CE) certification as required by the Program Manager.
• Cisco Certified Network Professional – Security.
• Cisco Certified Network Professional – Enterprise.
• Palo Alto Networks Certified Network Security Engineer.

TS/SCI required. Candidates must be willing and able to attain a CI Polygraph for certain positions as determined by the contract.

• On customer site (USA, VA, Fort Belvoir).
• May require lifting, reaching, bending, and other moderately strenuous activity.
• Travel may be required (10‑25%).

We are an equal opportunity employer. We strongly encourage individuals with disabilities, protected veterans, and those from underrepresented backgrounds to apply.